Volvo 850 service & repair manual - Volvotips The service manuals covers the Volvo 850 but can also be used for the Volvo S70, C70 and V70 Classic (the first version of the Volvo V70 that was produced until 2000). The service manuals are written in English. Volvotips got permission of Volvo Cars Heritage to publish the Volvo 850 service manuals and Volvo 850 parts catalogs. VOLVO 850 USER MANUAL Pdf Download. Volvo 850 User Manual . Volvo 850 user's manual. Automobile Parts Volvo 850 Manual a/c-heater system (10 pages) Page 22 1994 Volvo 850 Close the center panel vents. When the passenger compartment has become sufficiently warm, set the blower control to position 2, adjust the temperature and open the side air vents.